Gas-producer.



J. STEWART..

GAS PRQDUGEB. y .APPLICATION FILED MAB.. 17l 1909.

Patented May 1911.

Jenn strliwnn'r, ver* coDNonfPARK, ENGLAND. A l' y ':Tooll eohorn; itiaayroncem: y .n Be itknown' that I, JOHN STEWART, a sub- .Lject of thelin'g of Great `Britairnand a vresident ofv-Godner Parl ,in the county of ,Derby, England, have invented new and useful vImprovements :in Gas-Producers, ,of

which the following is specification.

fThis invention relates to improvements in and applicable to; gas producers or generar "with a fire grate, fittedv to revolve on a horitor's 'of the water bottom `type and provided y zontal axis, `the present,` invention having particular rel-ferencev to gas producers fitted with revolving fire gratos of the kind described in the Specification of the Urs.; A.

Patent No,.885,l00.- In ythese gas producers theclinker, ashes and some of the `)fuel falls intoand lls the wat-er trough whereby the' -power Arequired to rotate the grate is increased considerably'and there are ne means 1 for eiiciently controlling sae lengthozf time --the fuel remains' inthe producer, or-of con- The present invention 'trollingthe expulsion 'of the lclinke-r. and

has for its object the. application .to andthe. combinationwith gasproducers fitted with gratesof the kind herein referred vtofof 'means whereby full control of the working of the producer is obtained, which means prevent kthe fuel being `drawn out.` of the producer by the revolving grate, .enable the fuel to retained in the producer `for any length. of' time and by whichthe water troughy is kept clear o ashes and clinker and consequently the grate l can be more easily rotated.

In the drawings z-Fi'gure 1 is aseetional elevation of' the lower part of a producer' iitted with a rotary gra/tey and showing also the application of'means for controlling the action of the producer, and Fig. 2 is a sectional lan on the line A, A, Fig.V l, with one balli of the grate removed.

The lower part ofthe producer 1 is made with 'inclined side plates 2 which rest upon ythe side plates 3 of the water trough 4, the

bottom .of which'is formed by aplate 5 attached jto ,the side plates 3. The grate shown in the drawing is provided with :a .central hollow drum 6 onv the 'outer surface of which there'are 'a number of longitudinal ribs 7 and between such ribs there areopenings- 8. The ribs project 'radially from a center 9 which is eccentric to the drum'l center 10, andl totheouter face of the-.ribs

GAS-PRDUGER.

y A Specification oftettcxs '.Eatent.` Patented lYIay y16,' V19121, applicati@ med name 17, isos.. serial ita/183.98

I; igrate being built up insections of any suit-- cylindrical grate formed as describedis of such diameter and is so mounted that there remain considerable spaces to either` side of Vthe producer, throughv whichxashes and clmkers may pass, these being feddownward grate.. The vclaws 13 carried; by` the grate are arranged in rows parallel with. lthe, grate axis, such rows being disposed diametrically opposite each other; and the claws arer of such length that when the grate is `set with them in' ahorizontal position, they substantially bridge the spaces at the sides of the grate and operate to assist in 'supporting the fuel "mass.v vIn gas producers where a deep. bed of fuel is fmaintained, the Iash, lclinlrer, and burning fuel in the lower part of the producer, form amore or less co.- herent mass {sothattheclaws von` thegrate when `set as just f described are .suicien't closures. for the spaces at thesides of thel grate; but when thegrate-is rotated they At the ends of the druin are collars 14" which are. tted with spring rings l5 which revolve in contact withv openingsin. the* end framing 16.-

'- Y The side plates 3` of thewater trough are providedy with brackets y17 which forni bearings for the. square shafts 18 -hy which doors 19 are carried'. The lshafts 18 are consider-I [ablyj below the axis of the cylindrical -grate so vthat when the doorsare'swung inward to positions approximately horizontal, they tance from 'theclaw 13 of the grate when the latter are in .a yhorizontal position. These doors are provided withl edge slots '20 for` the claws 13 -to pass through andpnormally are held with theirinne'r edgescomgrate, but they 4may be lowered to the dot- Vted line position. The surface ofthe doors may be solid as shown or-the doors may be .inthe form' of a grating'. f

In a producer 'tted as herein described the trough ,4is kept lfull of water and the a y:circular iire`v grate 1l' israttached, such' doors are normally held in the fullline pooperate to stir up the lowerl massof the yfuel` bed and feed down the ashand elinlre'rs.V

paratively near the surface of the rotating.-

thereof and between it and thesidel wallsI from time totime by therevolution of the are directly below but 'at a considerable dis sition. The doors thus support the fuel at the sides of the producer and prevent it fallin into the trough and they also prevent uel or ashes being drawn out of the producer by the rotation of the grate, or they can be used for regulating the quantity of matter removed from the producer by the rotation of the grate. Vhen however it is\desired to clean the producer by the removal of the clinker and ashes from the 'bottom part of the same, the grate is brought to rest-with the claws in a horizontal position so that they act as supports to the fuel. The doors 19 are then lowered and the clinker and ashes fall into the water ltrough from which they are removed in the usual manner. The doors are afterward raised to their full line position and are 'held there until it is again required to clean out the producer.

What I claim is l. In a gas producer combustion chamber' -l ofthe water bottom type, the combination 'with a gas producer of a cylindrical grate mounted in the lower part thereof and of a size to leave open spaces between the periphery'of the grate and the side walls of vthe chamber, claws carried by the grate and arranged in diametrically opposed longitudinal rows and adapted when brought to rest in a horizontal 'position to substantially bridge the saidl spaces 'at the sides of, the grate and thus operate as supports for the fuel bed, and hinged doors movable independently of the movements and position of the grate, the said doors when moved to an approximately horizontal position being below the claws carried by the grate when they are set horizontally, and at a consid.

erable distance from them, substantially asy set ferth.4

2. In a gas producer of the water bottom type, the combination with a gas producer combustion chamber of a cylindricalgrate mounted in the lower part thereof, the grate being of a size to leave spaces between its periphery and the side walls of the chamber, a water trough below the grate, claws carried by the grate and arranged in diametrin cally opposed longitudinal rows, the claws being-adapted when set horizontally to substantially bridge the spaces at the sides of the grate and thus serve as supports for the fuel bed, and doors hinged in the water' trough and movable independently of the movements and position of the grate, the said doors when set to approximately horizontal positions being below and at a considerable distance from the claws carried by the grate when they are set horizontally, substantially as set forth.

3'. In a gas producer of the water bottom type, the combination with a gas producer Vcombustion chamber of a cylindrical grate mounted in the lower part thereof and of a size to leave open spaces between the periphery of the grate and the side walls of the chamber, claws carried by the grate and arranged in diametrically opposedlongitudinal rows and adapted when brought to rest in a horizontalv position to substantially bridge the` said spaces at the sides of the grate 'and thu-s operate as supports for the fuel bed, and hinged doors movable independently of the movements and position of 

